Using the two-circles half method, the number of catheters in a good position was 0 in 3 cases, 1 in 19 cases, and 2 in 14 cases. We evaluated the data of 36 patients with spontaneous ICH of ＞50 cc who underwent stereotactic hematoma drainage with thrombolysis. Using the two-circles half method, the number of catheters in a good position was 0 in 3 cases, 1 in 19 cases, and 2 in 14 cases. The mean ages in each case were 58.0, 67.1, and 69.6, respectively, with p-value of 0.403. Midline shifts seen in each case were 6.0±2.3 mm, 7.7±3.9 mm, and 6.9±3.9 mm, respectively, with p-value of 0.712. Mean hematoma volumes on admission in each case were 60.9±12.7 cc, 70.8±23.3 cc, and 72.1±21.3 cc, respectively, with p-value of 0.722. Mean GCS scores on admission in each case were 10.3±2.5, 11.7±2.5, and 10.8±2.8, respectively, with p-value of 0.517. The average times from initial onset to operation in each case were 4.3±2.7 h, 5.4±5.1 h, and 3.4±1.7 h, respectively, with p-value of 0.378. The intraventricular hemorrhage (IVH) portions among total hematoma in each case were 67%, 89%, and 50%, respectively, with p-value of 0.042. Systolic blood pressure measurements in each case were 146.7±30.6 mmHg, 153.8±35.6 mmHg, and 180.7±27.3 mmHg, respectively, with p-value of 0.051 (
Table 1). As there were few cases with 0 catheters, we compared cases with two catheters and one catheter. In cases with one catheter, the average difference between the hematoma volume on POD 3 and POD 0 was 32.7 cc (
Table 2). In cases with two catheters, the average difference was 36.8 cc, with no significant difference. In cases evaluated using the 1-cm margin method, the number of catheters in a good position was 0 in 4 cases, 1 in 19 cases, and 2 in 13 cases. In cases evaluated using the 1-cm margin method, the numbers of catheters in a good position were 0 in 4 cases, 1 in 19 cases, and 2 in 13 cases, respectively. The mean ages were 55.3±15.9, 69.1±9.7, and 68.4±16.1, respectively, with p-value of 0.159. Midline shifts seen in each case were 6.3±2.0 mm, 6.7±3.4 mm, and 8.3±4.5 mm, respectively, with p-value of 0.438. The IVH portions amongst total hematoma in each case were 75%, 68%, and 77%, respectively, with p-value of 0.873. Mean hematoma volumes on admission in each case were 53.2±2.9 cc, 70.7±21.8 cc, and 75.6±22.8 cc, respectively, with p-value of 0.196. Mean GCS scores on admission in each case were 11.5±2.6, 11.8±2.2, and 10.3±3.0, respectively, with p-value of 0.279. The average times from initial onset to operation in each case were 2.9±1.8 h, 5.6±5.1 h, and 3.4±1.7 h, respectively, with p-value of 0.237. Systolic blood pressure measurements in each case were 170.0±47.6 mmHg, 160.6±34.5 mmHg, and 166.2±32.3 mmHg, respectively, with p-value of 0.846 (
Table 3). As there were few cases with 0 catheters, we compared cases with two catheters and one catheter. In cases with one catheter, the average difference between the hematoma volume on POD 3 and POD 0 was 33.5 cc, and in cases with two catheters, the average difference was 40.0 cc, which was slightly high. However, there was no significant difference (
Table 4). Since changes in the hematoma volume were maximal between PODs 0 and 3, we chose to compare those values.